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Commit 2a58b4f8 authored by Peter Meerwald's avatar Peter Meerwald Committed by Jonathan Cameron
Browse files

iio:tcs3472: Check for buffer enabled and locking 



Signed-off-by: default avatarPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 4ff9f633

drivers/iio/light/tcs3472.c

+10 −1
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ 


struct tcs3472_data {

	struct i2c_client *client;

	struct mutex lock;

	u8 enable;

	u8 control;

	u8 atime;
@@ -116,10 +117,17 @@ static int tcs3472_read_raw(struct iio_dev *indio_dev, 


	switch (mask) {

	case IIO_CHAN_INFO_RAW:

		if (iio_buffer_enabled(indio_dev))

			return -EBUSY;



		mutex_lock(&data->lock);

		ret = tcs3472_req_data(data);

		if (ret < 0)

		if (ret < 0) {

			mutex_unlock(&data->lock);

			return ret;

		}

		ret = i2c_smbus_read_word_data(data->client, chan->address);

		mutex_unlock(&data->lock);

		if (ret < 0)

			return ret;

		*val = ret;
@@ -255,6 +263,7 @@ static int tcs3472_probe(struct i2c_client *client, 
	data = iio_priv(indio_dev);

	i2c_set_clientdata(client, indio_dev);

	data->client = client;

	mutex_init(&data->lock);



	indio_dev->dev.parent = &client->dev;

	indio_dev->info = &tcs3472_info;